qspec.e_theta  (  theta ,  phi ,  axis = -1  )[source]

Parameters:

thetaarray_like

The angle theta.

phiarray_like

The angle phi.

axisNone

The axis along which the vector components are aligned.

Returns:

outndarray

The unit vector 'e_theta'. Part of an orthonormal system defined by: e_x = e_r(pi/2, .) e_y = e_r(0, pi/2) e_z = e_r(0, 0)